"Yeah, he is." Sirius glared at the thought of Snape being anywhere near Mary. His eyes narrowed as he saw her rubbing her leg, a nervous expression on her face, and he reached out to cover her hand with his, but then he realized that it likely wouldn't have the calming effect intended and pulled it back, raking it through his hair again instead. What was it about this girl that managed to make him act like a total ponce and a complete bastard at the same time? Merlin.
Looking back up at her, he scowled, then sat up straight at her words, startled. And pissed. His voice was full of emotion, mostly anger, but there was something else too that he didn't want to identify.
"Find someone else? Holy fuck, Mary, I didn't mean Snape! Why the hell would you- just-aargh." He let his head fall back against the stone, closing his eyes and making himself breathe so that he didn't say too much.